That makes it so every note is published to the website though right? 

I use the homepage hashtags so every shitpost isn't sent to a website. I use the hashtags to only publish specific notes. 🤷‍♂️

Then I added other hashtags in nav so that a note will both land on home page and also be organized by topic on nav. 

ex:
i shit post and inlcude no hashtags associated with website so it won't be published there

i note about #vehicle and it lands on homepage 

i note about #vehicle and #truck an it lands on homepage and subdomain truck. So that once on homepage about vehicles you can nav to just trucks.